Cable leakage-proof device

Abstract

The utility model provides a cable leakage-proof device, which belongs to the technical field of cable protection, and is characterized in that the cable leakage-proof device comprises an external protection shell and an internal protection shell, the external protection shell and the internal protection shell are fixedly connected through a support column, the cross section of the external protection shell is an equilateral triangle, and the cross section of the internal protection shell is an equilateral triangle. The internal protective shell is in a hollow cylindrical shape and is used for wrapping a cable, and the external protective shell, the internal protective shell and the supporting column are integrally formed; a drainage channel penetrating through the inside and the outside is arranged on the surface of the external protective shell; the external protective shell is arranged, so that the internal protective shell is prevented from being in direct contact with underground soil; by arranging the inner protective shell and the supporting columns, the cable is located in the center of the outer protective shell, and the cable is prevented from making direct contact with accumulated water; according to the utility model, electric leakage of the cable caused by corrosion of the cable due to underground moisture after the cable is buried underground can be avoided, the service life of the cable is prolonged, and the safety performance of the cable is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable protection, and in particular relates to a cable leakage prevention device. Background Art

[0002] Cables are wire products used to transmit electrical (magnetic) energy, information, and to achieve electromagnetic energy conversion. They consist of one or more insulated cores, which may also contain a sheath, a total protective layer, and an outer sheath, and sometimes uninsulated conductors are attached. The core structural components of cables usually include conductors, insulation layers, shielding layers, and sheaths.

[0003] Cables buried underground do face severe corrosion challenges due to being in the underground environment for a long time. Factors such as moisture, acidity, salt content, microbial activity and temperature changes in the soil can accelerate the degradation of the cable's external protective layer, leading to a decrease in insulation performance and even causing leakage.

[0004] Leakage not only leads to energy waste, but also may cause safety hazards, such as electric shock accidents, fires, and electromagnetic pollution to the surrounding environment. In more serious cases, leakage may also affect the stable operation of the power grid and cause large-scale power outages. Utility Model Content

[0005] In view of this, the utility model provides a cable leakage prevention device, which can prevent the cable from being corroded by underground moisture after the cable is buried underground, causing cable leakage, thereby extending the service life of the cable and improving the safety performance of the cable.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a cable leakage prevention device, which comprises an external protective shell and an internal protective shell. The external protective shell and the internal protective shell are fixedly connected by a support column. The cross-section of the external protective shell is an equilateral triangle, and the internal protective shell is a hollow cylinder, which is used to wrap the cable. The external protective shell, the internal protective shell and the support column are integrally formed; the surface of the external protective shell is provided with a drainage channel running through the inside and outside.

[0008] On the basis of the above technical solution, the cable leakage prevention device of the utility model can also be improved as follows:

[0009] Wherein, a side wall of the external protective shell is provided with an opening connected to the internal protective shell, and two interface support columns corresponding to each other are provided at both ends of the opening.

[0010] The beneficial effect of adopting the above-mentioned improvement scheme is that by setting the opening, it is convenient to put in the cable and facilitate operation.

[0011] Furthermore, the cross-sections of the two interface support columns are wavy.

[0012] Enhanced sealing: The wave shape can form a tighter sealing effect when the interface support column contacts the outer protective shell and the inner protective shell. The peaks and troughs can be embedded in each other's structure, effectively blocking the intrusion of moisture and impurities and preventing the risk of leakage by increasing the contact area and surface bite.

[0013] Improve structural stability: The wave shape can disperse stress. When subjected to external forces, the wave structure can transmit and absorb energy in multiple directions, reducing stress concentration in a single direction, thereby improving the stability and deformation resistance of the entire structure and extending its service life.

[0014] Furthermore, a waterproof baffle is provided inside the inner protective shell where it contacts the cable.

[0015] The beneficial effect of adopting the above-mentioned improvement scheme is: by providing a waterproof baffle, water is prevented from entering the cable through the interface support column.

[0016] Furthermore, buckles are provided on the surfaces of two corresponding interface support columns.

[0017] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting the buckle, the adjacent interface support columns are prevented from being separated, and water enters the external protective shell to cause leakage.

[0018] Furthermore, the side walls of the support column and the interface support column are provided with through holes.

[0019] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the through hole, when there is water accumulated inside the external protective shell, the accumulated water can flow into the lowest point, thereby avoiding the accumulation of water on the top of the internal protective shell.

[0020] Furthermore, the drainage channel is arranged at an angle and is not perpendicular to the side wall of the outer protective shell.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are: optimizing drainage efficiency: the inclined drainage channel can use gravity to more effectively guide the accumulated water or infiltrated water to the predetermined outlet. Compared with vertical or horizontal drainage channels, the inclined design reduces the possibility of water accumulation, speeds up drainage, and reduces the risk of long-term moisture inside the internal protective shell, thereby more effectively protecting the cable from the influence of moisture.

[0022] Reduce the risk of water accumulation and corrosion: Water is less likely to accumulate on inclined surfaces, which reduces the time that moisture is in contact with the cable sheath material, helping to prevent insulation degradation and corrosion problems caused by long-term moisture in the cable, and extending the service life of the cable.

[0023] Self-cleaning effect: At a certain angle, the inclined drainage channel can also use the scouring effect of gravity and water flow to automatically remove impurities and sediments in the channel, keep drainage unobstructed, and reduce maintenance requirements.

[0024] Avoid backflow: In certain environments, such as areas with heavy rainfall or high groundwater levels, the inclined drainage design can effectively prevent external moisture from flowing back into the protective shell under pressure, further enhancing the protective effectiveness of the anti-leakage device.

[0025] Furthermore, the cross section of the drainage channel is a trigonometric function-shaped wave, and the period of the trigonometric function is half of the amplitude.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are: Increased surface area: Compared with a simple straight line or plane, the wavy cross-section can provide a larger surface area. This helps to increase the contact area between the water flow and the channel wall during the drainage process, accelerate water evaporation, reduce water residue, and thus more effectively keep the interior dry.

[0027] Self-cleaning function: The wavy surface design can produce a certain disturbance effect when water flows through, which helps to remove impurities and sediments attached to the channel wall and keep the drainage channel unobstructed.

[0028] Furthermore, the drainage channel is perpendicular to the side wall of the external protective shell, and a one-way valve is provided inside the drainage channel.

[0029] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: Backflow prevention: The one-way valve only allows water or other liquids to flow in one direction, that is, it can only flow from the inside to the outside, but not in the opposite direction. This design can effectively prevent external moisture, sewage or high water levels under certain conditions (such as heavy rain, floods) from flowing back into the internal protective shell, protecting the cable from the influence of external moisture.

[0030] Keep the inside dry: By preventing the backflow of external moisture, the one-way valve helps maintain a dry environment for the cable and the internal protective shell, reducing problems such as insulation degradation and corrosion caused by moisture in the cable, thereby extending the service life of the cable and ensuring safe operation.

[0031] Furthermore, the outer protective shell and the inner protective shell are made of polyvinyl chloride.

[0032] Compared with the prior art, the beneficial effects of the cable leakage prevention device provided by the utility model are:

[0033] High structural stability: since the outer protective shell (1) and the inner protective shell (2) are fixedly connected via the support column (3) and are integrally formed, this structure ensures the stability and firmness of the device, enabling it to effectively protect the cable from damage by the external environment;

[0034] Good waterproof performance: The device is provided with a drainage channel on the side wall of the external protective shell (1), which can quickly drain the moisture accumulated on the surface of the device, thereby preventing the moisture from penetrating into the internal protective shell (2) and the cable. In addition, a waterproof baffle is provided inside the internal protective shell (2) where it contacts the cable, further enhancing the waterproof performance;

[0035] Easy installation and maintenance: An opening connected to the inner protective shell (2) is provided on one side wall of the outer protective shell (1), which is convenient for installing and removing the cable. At the same time, buckles are provided on the surfaces of the two corresponding interface support columns (31), which facilitates the connection and fixation between the devices;

[0036] The drainage channel has a unique design: the drainage channel is tilted and not perpendicular to the side wall of the outer protective shell (1), which helps water to flow out faster. In addition, the cross section of the drainage channel is a trigonometric wave, which increases the surface area of ​​the channel and prevents water from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a schematic diagram of a cable leakage prevention device;

[0039] Figure 2 It is a cross-sectional view of a cable leakage prevention device;

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1. External protective shell; 2. Internal protective shell; 3. Support column; 31. Interface support column. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0043] Embodiment 1

[0044] like Figure 1 , Figure 2As shown, it is a first embodiment of a cable leakage prevention device provided by the utility model. In this embodiment, it includes an external protective shell 1 and an internal protective shell 2. The external protective shell 1 and the internal protective shell 2 are fixedly connected by a support column 3. The cross-section of the external protective shell 1 is an equilateral triangle, and the internal protective shell 2 is a hollow cylinder for wrapping the cable. The external protective shell 1, the internal protective shell 2, and the support column 3 are integrally formed; the surface of the external protective shell 1 is provided with a drainage channel running through the inside and outside.

[0045] Among them, in the above technical solution, a side wall of the external protective shell 1 is provided with an opening connected to the internal protective shell 2, and two corresponding interface support columns 31 are provided at both ends of the opening.

[0046] Furthermore, in the above technical solution, the cross-sections of the two interface support columns 31 are wavy.

[0047] Furthermore, in the above technical solution, a waterproof baffle is provided inside the internal protective shell 2 which contacts the cable.

[0048] Furthermore, in the above technical solution, buckles are provided on the surfaces of two corresponding interface support columns 31 .

[0049] Furthermore, in the above technical solution, the side walls of the support column 3 and the interface support column 31 are provided with through holes.

[0050] Furthermore, in the above technical solution, the drainage channel is arranged at an angle and is not perpendicular to the side wall of the outer protective shell 1 .

[0051] Furthermore, in the above technical solution, the material of the outer protective shell 1 and the inner protective shell 2 is polyvinyl chloride.

[0052] Embodiment 2

[0053] like Figure 1 As shown, it is a second embodiment of a cable leakage prevention device provided by the utility model. In this embodiment, it includes an external protective shell 1 and an internal protective shell 2. The external protective shell 1 and the internal protective shell 2 are fixedly connected by a support column 3. The cross-section of the external protective shell 1 is an equilateral triangle, and the internal protective shell 2 is a hollow cylinder for wrapping the cable. The external protective shell 1, the internal protective shell 2, and the support column 3 are integrally formed; the surface of the external protective shell 1 is provided with a drainage channel running through the inside and outside.

[0054] Among them, in the above technical solution, a side wall of the external protective shell 1 is provided with an opening connected to the internal protective shell 2, and two corresponding interface support columns 31 are provided at both ends of the opening.

[0055] Furthermore, in the above technical solution, the cross-sections of the two interface support columns 31 are wavy.

[0056] Furthermore, in the above technical solution, a waterproof baffle is provided inside the internal protective shell 2 which contacts the cable.

[0057] Furthermore, in the above technical solution, buckles are provided on the surfaces of two corresponding interface support columns 31 .

[0058] Furthermore, in the above technical solution, the side walls of the support column 3 and the interface support column 31 are provided with through holes.

[0059] Furthermore, in the above technical solution, the cross section of the drainage channel is a trigonometric function-shaped wave, and the period of the trigonometric function is half of the amplitude.

[0060] Furthermore, in the above technical solution, the material of the outer protective shell 1 and the inner protective shell 2 is polyvinyl chloride.

[0061] Embodiment 3

[0062] like Figure 1 As shown, it is a third embodiment of a cable leakage prevention device provided by the utility model. In this embodiment, it includes an external protective shell 1 and an internal protective shell 2. The external protective shell 1 and the internal protective shell 2 are fixedly connected by a support column 3. The cross-section of the external protective shell 1 is an equilateral triangle, and the internal protective shell 2 is a hollow cylinder for wrapping the cable. The external protective shell 1, the internal protective shell 2, and the support column 3 are integrally formed; the surface of the external protective shell 1 is provided with a drainage channel running through the inside and outside.

[0063] Among them, in the above technical solution, a side wall of the external protective shell 1 is provided with an opening connected to the internal protective shell 2, and two corresponding interface support columns 31 are provided at both ends of the opening.

[0064] Furthermore, in the above technical solution, the cross-sections of the two interface support columns 31 are wavy.

[0065] Furthermore, in the above technical solution, a waterproof baffle is provided inside the internal protective shell 2 which contacts the cable.

[0066] Furthermore, in the above technical solution, buckles are provided on the surfaces of two corresponding interface support columns 31 .

[0067] Furthermore, in the above technical solution, the side walls of the support column 3 and the interface support column 31 are provided with through holes.

[0068] Furthermore, in the above technical solution, the drainage channel is perpendicular to the side wall of the external protective shell 1, and a one-way valve is provided inside the drainage channel.

[0069] Furthermore, in the above technical solution, the material of the outer protective shell 1 and the inner protective shell 2 is polyvinyl chloride.

[0070] Specifically, the principle of the utility model is: during installation, open the interface support column 31, put the cable into the outer protective shell 1, bury the outer protective shell 1 and the cable together in the ground, wherein the central axis of the support column 3 is horizontal; when water molecules want to enter the outer protective shell 1, the interface support column 31 is wavy, blocking the entry of water molecules, and the water molecules condense when they hit the surface of the interface support column 31; if moisture gathers inside the outer protective shell 1, the accumulated water enters the bottom of the outer protective shell 1 through the through hole prevented by the support column 3, and is discharged from the outer protective shell 1 through the drainage channel.

Claims

1. A cable leakage prevention device, characterized in that: The invention comprises an external protective shell (1) and an internal protective shell (2), wherein the external protective shell (1) and the internal protective shell (2) are fixedly connected via a support column (3), the cross section of the external protective shell (1) is an equilateral triangle, and the internal protective shell (2) is a hollow cylinder for wrapping a cable, and the external protective shell (1), the internal protective shell (2) and the support column (3) are integrally formed; and a drainage channel running through the inside and outside of the external protective shell (1) is provided on the surface of the external protective shell (1).

2. A cable leakage prevention device according to claim 1, characterized in that: A side wall of the external protective shell (1) is provided with an opening connected to the internal protective shell (2), and two corresponding interface support columns (31) are provided at both ends of the opening.

3. A cable leakage prevention device according to claim 2, characterized in that: The two interface support columns (31) have wave-shaped cross sections.

4. A cable leakage prevention device according to claim 3, characterized in that: A waterproof baffle is provided inside the internal protective shell (2) which contacts the cable.

5. A cable leakage prevention device according to claim 4, characterized in that: Buckles are provided on the surfaces of two mutually corresponding interface support columns (31).

6. A cable leakage prevention device according to claim 5, characterized in that: The side walls of the support column (3) and the interface support column (31) are provided with through holes.

7. A cable leakage prevention device according to claim 6, characterized in that: The drainage channel is arranged obliquely and is not perpendicular to the side wall of the external protective shell (1).

8. A cable leakage prevention device according to claim 7, characterized in that: The cross section of the drainage channel is a trigonometric function wave, and the period of the trigonometric function is half of the amplitude.

9. A cable leakage prevention device according to claim 8, characterized in that: The drainage channel is perpendicular to the side wall of the external protective shell (1), and a one-way valve is provided inside the drainage channel.

10. A cable leakage prevention device according to claim 9, characterized in that: The material of the outer protective shell (1) and the inner protective shell (2) is polyvinyl chloride.

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